Still.



B. S. LINDSEY.

I STILL.

APPLIUATION FILED SEPT. 25, 1908.

Patented June 23, 1914.

2 SHEETS-SHEET l.

-.Attorneys B. S. LINDSEY.

STILL.

APPLICATION FILED SEPT. 25, 1908.

2 SHEETS-SHEET 2.

a Inventor f l a Patented June 23,1914.

VVtnes'seg Y BENJAMIN-'5. LINDSEY, 0F BALTIMORE, MARYLAND.

STILL.

.i i Specification of Letters Patent.

Patented June 23, 1914..

Application filed September 25, 1908. Serial No. 454,754.

To all 4'zo/tom, it may concern:

Be 1t known-that, I, BENJAMIN S, LINDSEY,

' a citizen of the United States, residing at. Baltimore, in the Stateof Maryland, have invented a certain new and useful Improvementinv-Stills, of which the following is a specification.

This lnventlon relates -to improvements 1n stills, and its object is toprovide a still for producing'high proof spirits economically andeffectively by ajsingle continuous process; and, furthermore, to employthe alcoholic vapor, as well as the steam generated from the dryingslop, to furnish heat for the operation of distillation.

llVith these objects in view, the invention consists in a novelconstruction and arrangement of parts t-o be hereinafter described4 andclaimed, reference being had to the ae- -au arrow crossed by two lines.

companying drawings forming a part of this specification, in whichdrawings- I Figure l is a'view, partly in elevation and partlyinsection, of the apparatus, parts being broken away. Fig. 2 is a viewpartly in elevation and partlyl in section of the driers.

- Fig. 3 is a detail vertical section on an enlarged scale showing theupper portion of the main vaporizer'.4 Fig. 4 is a horizontal sectionthrough the secondary heater or condenser. Fig. 5 is an enlarged detailview of one' of the conveyers of the drier, adjacent parts being shownin section.

In the drawings, the beer is designated byl an arrow, the slop by adouble-headed arrow, the alcoholic vapors by an arrow crossed centrallyby a Vline and the'water vapors by Referring more particularlgy to thedrawings, in which like reference numerals designate like partsthroughout the several views,

1 designates a pipe through which the beer is pumped to the main heateror concentrating element 2, where it passes through the tubes 3 on upthrough the tubes 4 of the secondary heater and condenser orconcentrating element 5, -and through the pipe 6 to the main vaporizer7. The heaters 2 and 5 comprise cylindrical vessels which are eachprovided with a head 8 near the ends thereof, through which the ends ofthe tubes 3 and 4 project, forming an air tight chamber each of saidheaters between the heads,

and surrounding said tubes. The heaters 2 and 5 are secured together byan air-tight joint 9. i

The concentrating element or main vaporizer is provided with a heatconductor which, in the present instance, is in the form of a steamjacket 10, and is provided with a number of compartments 11 formed byhorizontal partitions 12 arranged equidistant within the said vaporizer.In each of said compartments 11 is a cylinder having a flange on itslower end secured to the upper surface of the partition 12, saidcylinder forming a cup 13. A pipe 14 has its lower end secured in anaperture in the eenter of the partition 12, within the cup, and itsupper end projects above the cup, and is provided with a hood 15 tocause the vapor to spread in each compartment after it passes throughthe pipe 14. A pipe 16 has its upper end secured in an aperture in thepartition 12 so as to enter the cup 13, and has its lower end p"ojectingddwn into the liquid in the next compartment on the outside ot' the cup13 therein, said pipe-16 being thus liquid sealed, as clearly shown intherethrough. The vapor rising in each compartment 11 passes upwardlythrough the pipe 14 and is expanded in the neXt compartment. above, and.finally passes out through the pipe at the top of the vaporizer. As thebeer flows into the uppermost- Com partmeut. 11 of the vaporizer 7, itrises therein untilit overflows into the cup 13, and passes out of saidcup throughthe pipe 16 into the next compartment below and so onthroughout the entire series. The pipe 16 of. the lower-most compartmenthas its lower end projecting into a cup 17 containing a liquid to sealsaid pipe and prevent the vapor generated in the pipes 18, 19, 20, 29and 30 from backing up into the vaporizer.

The partially exhausted beer leaves the vaporizer 7 through the pipe 18at the lower cud thereof, and passes through the jacketed pipes 19 and2O into the pipe 21. After the liquid passes into the pipe 21 it istermed slop. Pipe 21 is provided with al strainer 22. As the slop flowsover the strainer-22, the excess liquid, or slop,` drops through thestrainer, and Apasses out through a pipe v23 to a tank or other'suitable vessel, and th remaining liquid and heavier refuse matterpasses through the pipe 21 to a. drier, which latter. is composed ofv anumber of pipes 24 connected at 25, and each provided with a screwconveyer 26 to convey the refuse from f one vpipe to the other until thedried material is discharged atv 27. The convey-'ers ma cpci'atccl bymeans of powa? 1 mittctl tc pulleys @n thc outer cnt 'ls mi thcccnvcyci' shafts. To thc pipe ,i8 is cmiiicctcfl. n pipe which latter isccinA cctcd tc :1 'pipe 2l() cxlcmflilg into c tlouhlcr VQ.

Tha pipes fl? 20, und l) :tml llhc return pipes 09 muil 3() in* :sm 1Quizilla-(l ly intcifccminuziiczit'lig' atcmil j; -l 3l, connect ingpipcif nl' thc jackets holngincliftn'tcal. tt

lhc jackets Mc siipplicll 'with cupcl mul 'thcy :ubc prmiilcifl with ztsafety 1 The stcnm pcsssicg t'laough the ts heats thc bccl1 in thepipcfs 19 and fm1 the alcohol which rctmufs 'through pip@ 3G ashcrcinaftcr dcfecrihch and also 'hc-nts thc haci' ci: slop in 'thc pipccThe stumm gciic'rms in. thc pipes Z4 from the chyizi ct the hceijorslop, is collected in l 'Nic and conveyed thyougjh a pipe tc the ,j @imjacket l0, Where :L part of the ist used to hcmt the heer in thc vapor-@incl the ifemziindc's: is then conveyed yough'a 'pipe 3h to` the.hcntc' Where it it@ thc hccr passing through the tubes 4, unil rcduccltc boiling' Water) which passes out tlii'cugh :1 pipe 37 tc thcdcphlcgnmtorg, :for itpupcc Ywhich will hcicaftci mre 'ppelin The Steamwhich coiicuscs i'. thc jacket 'lil @emacs out of `rthc same ih a shape0l? hut water thwugh :it ppc 57 to :L 'jacket 58 which surrounds thepipa l, :ml in,

lichting'. thc hem' as it passes tc the main hczitci 2. "The picket 5Sis piovnlcd with am 'lhc :alcoholic mpc? iisiiig in thc hhritcr 5 andthc vzlporizci: 7, pag.595 through pipes :tml ill), thcn thi-hugh :ipipe lL0 tc thc matin hmtcir thou through :1 pipe All `tc :L doubler fl,uml up through :i pipe Q43 to thc first of thc (lcplrlcgumlms 0iconcentrating elements lh will pipe heilig connected to the top (rf Lhcifhmblci, mail cntqing' thc tcp of thc ichlilcgfjnmtmf. The alcoholicvapor created n tw pipes tl? il), :1nd 3() cmlccntrfitcfi :ipc il whichdisch:linges` into the 532. lf'hc vapor collecting in thic mxhlm"pastiera cui; cl the Smm: thifcl'lgl'l a pipe 5343 whi.:;l.i cmmcctcrlto thc pipc fil). n The (lcfphlcgmgitms '-lfl um 'cl'u'ml with it um'Illia l rfllifs mimi Hl u lim: l!

the pip@ alii,- tz'uvfl pmnllcl tf c uh mhcr1 (lrywmv:willy thi'm'wl thclii'f-lx :mtl thiiwl, tlcphlcggmatom. ln thc igccnml :mil l'cmth(lcphlcgnmtclfs thc lmilhzg; Wntci llcw down'- wzuzrlly while thevztpm's 'lcw upwiwlly. The wntcl' will, mtiunll im@ in html.; :ist itpasses from cnc dcphhatm lc thc cthcl, but it is not in thc applritti'zs :1, s'iillicimitly long time tc coul tu nu chjcctulmhlcuxlciit. Ccnscquently it willrnmf 1' (lmp hclmr .1 tcmpcrnturc of; 173"F., 'which ir; thc 'vzipfiiizing or' boiling point cgt pure ethylnlcmlml, thus preventing thc alcolici. fifcm comlcmi It will thereforebe Sccu that thc zilcrihclic *apcr passing from @hc flcphlcgmnlm' to thcother will always he S'lihjcctcf'l tc ri haut :thcvc thc tcmpcfutme ci?173 F., which is the vupmizing 0l boiling point cil pilrc alcuhol, andbchiw thc tcmpcmtum cf 2 F., which is the boiling* point ci" 'wat thusprcvcnting thc alcohol, Iimn @Unfit-mah' :nu-l at thc Same timecmhlcusing the intim m hich may hc carried into thc Afflciiih' nimmt;with the nlcchdlic impur, :tml nllcwmg it tu llcw buck through thcUii'ic bfi thc ilmillm' 4Q. The alcohol which muy hc urricll hurl: tothc douhlcl 42 will hc"'::1\,mizc\l h x@ thc vapor passing' liuto thcrilmihlcl fili* thzrmgh thc pipe 'lfl, ',mfl again im-rieti ulalzlnfrmghthc pipe -il-l to thc first ilcphlcgnmitm?. Tho hiuvici.' part nl? thcliquid which llwwf` limk to thc f'louhlm? 112 ``will lmcli up lhimigrilz:'l pipe filltc thc lwzrtci Ei, uml. than thi-migljh .f1` pipc to thc'lm'ihlc' 532 Vv'hcl'c it ire i'c vnporizotl, :md `thc .fihizwl'm'licmimi' www@ up through thc pipe 5G nml joins lim www in the pipe +10"'The hcalvim' lifglzffl :Minuut lates in. the flmlhhl.' iliitil it rcmhwluz level. cf thc pipe 30, :mil il; them lim hw gnvity through, thcpipvri .lll :mi lllv :mil joins thc haci' 'm thc pipc FS.

Hill

nim

same time the vapors in the vaporizer 7 are prevented from taking adownward course and passing into the pipe 18. Without this cup 17 there'would be nothing to prevent the same time to force the vapors in thevpipes 18, 19, 20,' 29 and 30- to pass into the doubler 52.

'What is claimed is: n 1. In.` a still, the combination of a vaporizer,a heater, said heater being in communication with said vaporizer, 'adrier for the slop,"and means for carrying the Vapor generated from thedrying slop to the vaporizer and the lheater for heating said heater andvapo'rizer. 2. In a still, the combination of aheater, a vaporizer, aconnection -between said heater and vaporizer, means for passing thematerial to be distilled through said heater and vaporizer, a drier,means for supplyin the vapors arising from-the drying materia vto `saidvaporizer,r said vapor passing through said Vaporizer to said heater, adcphlcgmator communica-ting 4 with said heater, said vapors beingcondensed and supplied to said dephlegmator.

In a still the combination with a vaporizer and a conductor for heatingthe vaporizer, of a drier for slop, and means for conveying tho heatingagent generated in thc drier to the conductor and out of comn'mnicationwith the vaporizer.

4. ln a still the combination with a vaporizcr` a heater, and adephlcgmator, of a' deplilegiiiatoi', .the heating` agent generated inthe drier.

In a still the combination with a heater,

` adrien and means tor directing beer successively into the heater anddrier, of means se iaite from said heer directing means for V(-onveyingto the heater the' heating agent generated in' the drier.

l. In a still the combination with vaporirning means, means fordirecting beer therey to. a dephlegmator, and means for directing vaportrom said vaporizing means and into the. dqihlegmator, of a drier, meansfor directing` beer trom the vaporizing means to Ithe drier, saidbeerlentering the drier in the torni ot slop, and moans separate fromsaid heer and vapor directing means, for di routing lo the dcplilcgmatorthe heating agent generated in the drier.

7. ln a still the combination with main and supplemental heaters, and.means for directing heer successively into the heaters, of a drier,means for directing beer thereto Vfrom the supplemental heater, saidbeer entering the drier in the form of slop, means separate from saidbeerdirecting means for directing to the y supplemental heater theheating agent generated in the drier, therelby to partlyvaporize thebeer Within the supplemental heater, and means separate from said beerdirectingmeans'for conveying the generated vapor from the supplementalheater to heat the beer Within the main heater.

8. In a still the 'combination with main l and supplemental heaters, andmeans for directing heer successively into the heaters, of a drier,means for directing beer thereto from the supplemental heater, said beerentering thendricr in the form of slop, means separate from said beerdirecting means for directing to the supplemental heater the heatingagent generated in the drier, thereby to partly vaporize the beer Withinthe supplemental heater, means separate from said beer directing meansfor conveying the generated vapor from the supplemental heater to heatthe beer 'Within the main heater, a dephlegmator, means separate fromsaid beer directing means for directing the said vapor from the mainheater to the dephlegmator, and means separate Jfrom said beer directingmeans for conveying the heating agent from the supplemental heater tothe dephlegmator to partly condense the vapor discharged into saiddephlegmator.

9. In a still the combination with main and supplemental heaters, andmeans for directing beer successively into the heaters, of a drier,means for conveying beer from the supplemental heater to the drier, saidbeer entering the drier in the form of slop, means separate from saidbeer directing means for conveying to the'supplemental heater theheating agent generated within the drier, thereby toi'partly vaporizethe beer Within the supplemental heater, means separate from said beerdirecting means for conveying the generated vapor from the supplementalheater to the main heater to heat the beer contained within the mainheater, a dcplilegmator, means separate from said beer directing meansfor conveying to the dephlegmator the vapor discharged into the mainheater, means separate from said beer directing means for conveying intothe dephlegmator the agent directed into the-supplemental heater,thereby to partly condense the vapor discharged into the deplilcgmator,and means for returning to the drier th liquid formed in thedephlegmator.

10. In a still the combination with main and supplemental heaters, andmeans for directing beer successively into the heaters, of a drier, saidbeer entering the .drier in the form of slop, means for conveying beerfrom the supplemental heater to the drier, means separate from said beerdirecting means returning 1111 conveying t1) the Siipplennfnlal 'heaterthe heating; agen; generated Within the drier, thereby te 1artlyvaperine the hijier Within the Supplemental heater, means een aratefrein said heer direetingr 1111111115 1'111' 111111.1111yi11g` ythe,generated raper 11'11111 the SI1 p11`le111e11tal l1 Vlater te the11111111 heater te heat the beer 1:1111ta111e1l within the main healer,a dephleginater, ineans sep* a'aie 'lrein said heer directing11111111111 ter conveying te the dephleginater the 1saperelisel1a1'gge1l inte the 111ai11 healer, ineana Sepa 'ate trenif yaaidheer direeting 111011115; for Conveying inte the 1lenl1leej111a111r tleagent directed into the anppleinental l1 :1te1', thereby te partlycondense the vapor 1flis- Charged inte the rlephleginater, 111011111;iter t1) the drier the liquid termed in the de'|v1l1legn1ater, meansl1'11' vaperizinej the said liquid during its re'nrn te the drier, andlneana separate il'rein aid liquid returning; means fer directing thegenerated 111111111' te the main heater.

1l. Tn a still the eetnhinatinn with a drier, a. f'le1l1leg111ater,111111111111 'F111' withdrawing frena the dephlegmater the liquidl'11rn1e1l therein by ee11densatien, and ter ennveyiirg Said liquid tothe drier, and 11111111111 lnr partly raperizing said liqiiid during itspassage le the d rier7 11iE inailnand f1111'111le111e11tal heatera.,1111111115 ter dira-,ting laaer inte said heal'eie4 sneeeeaively, rneansseparate frein the heer direeting means i111' eeinying te the Hannie--menlal heater the heating agent `gen1-rated in the drier, therein' l1)partly rapnriyze the heer within lhe seeeinlary healer, 1111111115neparale l'1'11n1 the, heer direeiling ine-ans llnr een veyiin: Said`1;e11eral1:d 11111111' and the lire-l nanied vapor le the main heater111 h1 a! the heer eenlained within raid inain heater. 11111111111leepawile l'rein lin heer direrline! nieans ler eenveying said 11111111'l'rein the 11min l1eat1'1'l11lhe 1lephleglni'lfir.and meanel aeparalel'r11111 the heer direeingi' mean ter eenrei'ing lhe healing :1.1111111'lrmn ihe .anpvpleinenlal healer in .aaid denhlefrinalnr le partlyrendenne the vaina' within the 1in-- nldeninaler,

lL). ln a .elill the eeniliinalien with a 'rainirixer and a healer, 11i'a drier, 'means l'11r direelinggj heer nneresnii'ely intl: the heater,ragnnimr and drier` said l11e1' entering the drier in the l'nrni el'11h11), means; .separate l'r-nni maid lirer direelingg meansl`11r1lirerling faieeefeirelif le ll1e rannri'fzer and healeiglhehealing@ agfjenl ,tejieneralml in lhe drier. lhere i141' 111 partly111111111111- llxe eenlenls eli '1hr header anil \a1 1ri :1nd 111111111@regiaraie l'rein :laid heer diva-H1115 111 x1111s l111' reiixvzv-A ingr:1 111 r1i1 1111lw11i1l l'ieatinn' agzjenl` l`1'11111 the 11'111' theheer iirier t1: ilsa1l111im i1a1 drh-1' 11 l l1: lhe i1;-

l. ln a Still the eeinhin 1111 with adm' and a drier,A 111t 1111111114ler ennvejgin ,1111 lhe healer 111 the-drier, anni heer 11' .lil iteater e drier :,'1111'111 ef Siep, means 'ter 1: n l" 1,11 the healer,and means U) Separate trein larid heer 111111veyi11g means ter utilizingthe heating agen* generated in the drier [er heating the beer prier teits diaeharge inte the heater.

ill. ln a Still the eeinhinatien with a heater, 11111111111 lierdirecting beerthereinte, a plnrality et depl'ilegmatera, a drier, 'and11111111111 'ler e11nreyi11g heer trein the heater 1:11 the drier, :saidheer entering the drier in the terni el 1111111, 1d means Separate fromsaid heer direrl ing; and 1:1111 veying means for e011- reying a,generated l1 ating agent from the drier le the healer and resspeetivedephleg- 11111111111; sneeesssi rely, Haid heating agent being `ra elnally1 reduced in temperature daring,r its eenreze thrnngh the healerand dephlegmatera, te separate et 1:1111 l'reln aleehelie vapor hyeeinlensatien, and ineanr: separate from said heer directing andeenreying,Y nieana fer directingr `Sgenerale1l 11111111* frein theheater te the deplileeanal111',Hneeefssively. V

li. ln a still the eninhinatien with aheater, 1111111111; .'lerdireeting' heer thereinte, a phlrality nl deiililegrinalzern, a drier,and means ter 1-1111\.e 1fin}1 heer lr11111 the heater to the drier,said heer (adering the drier in the 'terni 11i" slap, et 111111115separate freni Said heer direrting; and ee11ve5'fi11gmeans for cenreying.a `generated hezlxting1 agent from the drier te ihe heater andrespeetive dephlegmatera niireesieively, Said `heatingr agentbeinnjrradnall); redneed in temperatureduring its ennrae lln'enngh theheater and dephleg- 1111111111:, le nenarale stam frein alcoholic11111111' h y eendenaalinn, 111111111; ,aepa rale from `@aid heerdim-tine; and r11n1feying means for direeingj `f i'eneraled '1111111'trein the heater te the dephlegrnialere einfeeassively, and means F111'relnrningr 1'11 the drier the liquid 'termed h1' rnndenealien within thede11l1leg1nat0rs, leaid eanvevin;r means inehn'ling means for parti)v1'ai1eri'/,in;v the liquid, and means fOr direrine' :iaid generaled1111er te the vapor generated within the heater.

llt in a :dill the eeniliinalien with a va.- periaer, a flephlegniaer,11nd :1 drier, of 1111111111: ter direeingzj heer Snereeaively into theranarixer a 111i drier, 1111-111111 sepa 'ate from Said heer direrlinggjineann i111' conveying to the raperiifrer and i'leiahleginaer theheatinglj 111111111. `n'eiieraled in the drier, a doubler, a` reinrnnine extending; lr11n1 the doubler 111 the drier, 11111111111 l'nrconveying vapor from aaid relnrn nine le tlr deahler, ineens forrnnreifingg 111111111 l'rein the raporizer and dnaliler te 1h11denhleinnatm', and means for ennrelvinnf tn the den'liler the. liquidprodnred hy 1w1111`l11111ai-i11n within the, dephlegmaler.

nli'leginater and ler drain' 'H1111 Y irnn'i the ffleili'l1111111111111'l'n a n'ill thel eninlainatieii with a 1lea drier, et a denhler, meansirined by :e111'lensatien r11 the doubler, a

to the dephlegmatorthe heating agent generated in the drier to partlycondense the vapor in the dephleginator. y

1S. In a still the combination with a iva porizei', a dcphleginator anda drier, of a doubler, means for directing liquid formed by condensationfromthe dephlegmator to the doubler, a heated return pipe for receivingsaid liquid from the doubler and directing it to the drier, means forcollecting vapor-from the return pipe and directing it into the doubler,means for directing the vapor from the doubler and vaporizeriinto thedephlcginator, and means separate from the return pipe, for directing tothe dephlegmator the lheating agent generated by the drier to partlycondense the vapor within the dephlegmator.

19. In a still the combination with a dephlegniator and a drier, of adoubler, means for draining liquid formed by condensation from thevdephlegmator to the doubler,'means for sealing said draining means toprevent the escape of vapor thereinto from the doubler, a heated returnpipe for receiving said liquid from the doubler and directing it to thediier, means for collecting vapor from the return pipe and directing itinto the doubler, means for directing the vapor into the dephlegmatorfrom the doubler, and means separate from the return pipe, for directingto the dephlegmator the heating agent generated in the drier topartlycendense the vapor in't-hedephlegmator.

20. In a still the combination with a vaporizer, a deplilegniator, and adrier, rot' a doubler, meas'for conveying liquid formed by'condensationfrom the dephlegmator to the doubler, means for retaining a portion ofsaid liquid within the doubler to seal said conveying means and preventthe low of vapor from the doubler to the dephlegmator, a heated returnpipe for receiving liquid from the doubler and directing it to thedrier, means for collecting vapor from the return pipe and directing itinto the d'oubler,'means for conveying jfaponfrom the doubler andvaporizer into the dephlegmator, and `means separate from the returnpipe, for directing to the deplilegmator the heating agent generated inthe ',rlricr to partly condense the vapor in the dephleginator.

21. In a still the combination with a dephleginator, a heater and adrier, of a dou- /'bler, means Jfor conveying liquid formed bycondensation from the dephlegmator to the heater and from said heater tothe doubler,

' dephlegmator.

said liquid constituting means for heating the contents of the heater topartly vaporize said contents, a heated return pipe for receiving theliquid from the doubler and directing it to the drier, means forcollecting vapor from the return pipe and directing it into' thedoubler, meansfor directing the vapor fromthe heater and doubler intothe dephleginator, and means separate from the 'return pipe, fordirecting to the dephlegmater the heating agent generated in' the drierto partly condense the vapor in the 22. 1n a still the combination witha dephlegmator, a heater and a drier, of a doubler, means for conveyingliquid formed by condensation from the dephleg'mator to the heater andfrom said heater to the doubler, said liquid constituting means forheating the contents'of the heater to partly vaporize said contents, aheated return pipe for receiving the liquid 'from the doubler anddirecting it tothe drier, means for collecting vapor from the returnpipe and directing it into the doubler, means for directing the vaporfrom the doubler and heater into said heaterlto coperate with the liquidto heat the contents of the heater, means for conveying the vapor fromthe heater to the dephlegmator, and means separate from the return pipefor directing to the dephleginator the heating agent generated in thedrier, to partly condense the vapor in the dephlegmater.

23. In a still the combination with a dephlegmator, a heater and adrier, of a doubler, means for conveying liquid formed by condensationfrom the dephleginator to the heater and from said heater to thedoubler, said liquid constituting means for heating the contents of theheater to partly vaporize said contents, a heated return pipe for re#ceiving the liquid from the doubler and directing it to the drier, meansfor collecting vapor from the return pipe and directing it into thedoubler, means for directing the vapor from the doubler and heater intosaidheater to coperate with the liquid to heat the contents of theheater, and means for conveying the vapor from the heater to thedephlegmator, and means separate from the ret'urn pipe, for directing tothe dephleg1na tor the heating agent generated in the drier, to partlycondense the vapor in the dephleginator, saidlast named means includinga secondary heater for partly vaporizing the contents of the heater'.

24. In a still the combination with adephlegmator, a heater and a drier,of a dou bler, means for conveying liquid formed by condensation fromthe dephlegmator to the heater and from said heater to the doubler,saidl liquid constituting means for heating' the contents of thelheate'rto partly vaporize said contents, a heated returny pipe for rec, te ihedrier, means for.' collecting inem 'from (he return pipe und directingit inte die a'leulxier, menne fer directing the vapel' 'xmn thealeuifwl' and heater int Said .header im eepemte with ille liquid te'heat the nements ef the heater, means for com ve/ ying the wiper ivemthe heater to the de-n pheglnutern :md means separate from the returnpipe7 fer directing te the dephlegmm ter the heating agent generated inthe drier, Le pmfty condena@ the vapor in the dephlegmnitezxx, said Lustmaimed means including n mpeifiz and a secondary heater for partlywperizing; the ee-,iltenis of the mpelzer and seeeueiuiy heetei', :uidmeans for conveying

